| Titre : |
Contribution à l'étude de la cinétique d'hydratation au jeune age des bétons à hautes résistances. |
| Type de document : |
texte imprimé |
| Auteurs : |
Mustapha Cheikh-Zouaoui, Auteur ; Hacene Houari, Directeur de thèse |
| Editeur : |
Constantine : Université Mentouri Constantine |
| Année de publication : |
2008 |
| Importance : |
215 f. |
| Format : |
30 cm. |
| Note générale : |
Docteur d’Etat.
01 Disponible à la salle de recherche 02 au magazin de la B.U.C. 01 CD |
| Langues : |
Français (fre) |
| Catégories : |
Français - Anglais
Génie Civil
|
| Tags : |
G.civil:Matériaux de construction Cinétique hydratation |
| Index. décimale : |
624 Génie civil |
| Résumé : |
Predicting the short-term strength of concrete is essential in the field of civil engineering. To meet some building requirements (quick formwork removal, earlier prestressing, concreting in cold weather …), it is necessary to make concrete that has the best possible mechanical strength at a young age. The development of this type of concrete requires generally the use of admixtures associated with pozzolanic mineral additions such as silica fume. However this by-product, from the silicon and silica-ferrites alloys industry, still has a high cost owing to its limited production in the industrialised countries and non-availability in the others countries.
In this research work, we propose others substitutes to silica fume and the use of special substitution techniques. In addition, combinations of setting and hardening accelerators are considered so as to improve both setting and hardening concrete time as well as the mechanical strength at early age.
The results obtained show that the use of alkanolamine combined with calcium nitrate in cement mixes containing siliceous sand grinded and homogenised with cement produced a significant improvement in the mechanical strength at all stages particularly in the early ages (1 and 3 days) and also provided an important reduction in the setting time. Our results indicate that these performances are also dependant on the type of cement used mainly its alumino-ferrites composition.
|
| Note de contenu : |
Annexes. |
| Diplôme : |
Doctorat |
| En ligne : |
../theses/gcivil/CHE5214.pdf |
| Format de la ressource électronique : |
pdf |
| Permalink : |
index.php?lvl=notice_display&id=607 |
Contribution à l'étude de la cinétique d'hydratation au jeune age des bétons à hautes résistances. [texte imprimé] / Mustapha Cheikh-Zouaoui, Auteur ; Hacene Houari, Directeur de thèse . - Constantine : Université Mentouri Constantine, 2008 . - 215 f. ; 30 cm. Docteur d’Etat.
01 Disponible à la salle de recherche 02 au magazin de la B.U.C. 01 CD Langues : Français ( fre)
| Catégories : |
Français - Anglais
Génie Civil
|
| Tags : |
G.civil:Matériaux de construction Cinétique hydratation |
| Index. décimale : |
624 Génie civil |
| Résumé : |
Predicting the short-term strength of concrete is essential in the field of civil engineering. To meet some building requirements (quick formwork removal, earlier prestressing, concreting in cold weather …), it is necessary to make concrete that has the best possible mechanical strength at a young age. The development of this type of concrete requires generally the use of admixtures associated with pozzolanic mineral additions such as silica fume. However this by-product, from the silicon and silica-ferrites alloys industry, still has a high cost owing to its limited production in the industrialised countries and non-availability in the others countries.
In this research work, we propose others substitutes to silica fume and the use of special substitution techniques. In addition, combinations of setting and hardening accelerators are considered so as to improve both setting and hardening concrete time as well as the mechanical strength at early age.
The results obtained show that the use of alkanolamine combined with calcium nitrate in cement mixes containing siliceous sand grinded and homogenised with cement produced a significant improvement in the mechanical strength at all stages particularly in the early ages (1 and 3 days) and also provided an important reduction in the setting time. Our results indicate that these performances are also dependant on the type of cement used mainly its alumino-ferrites composition.
|
| Note de contenu : |
Annexes. |
| Diplôme : |
Doctorat |
| En ligne : |
../theses/gcivil/CHE5214.pdf |
| Format de la ressource électronique : |
pdf |
| Permalink : |
index.php?lvl=notice_display&id=607 |
|
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